Abstract
The security of any medical image can be characterized as its integrity, confidentiality, and authentication. These security vulnerabilities restrict the development of mobile healthcare applications, which intend to improve the efficiency of medical image communication. To address the vulnerabilities associated with medical images, we propose a multilevel chaotic encryption technique for medical images. This technique utilizes multiple chaotic maps viz.: sine, cubic, and logistic maps for enhancing the key space, security, and robustness of medical images. The security, speed, and reliability of the proposed technique for medical images are illustrated via experiments for key sensitivity, performance, and statistical analysis. The proposed technique offers a large key space, pixel diffusion, and confusion. Security analysis shows a high sensitive dependence of the encryption and decryption techniques to any subtle change in the secret key, the plain medical image and the encrypted image. Also, the proposed technique has a large enough key space to see off attacks like brute force. Therefore considering the security during transmission of medical images over the communication network, the proposed work becomes a potential choice.
Published Version
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